Key Takeaways
- Tongue tie (ankyloglossia) affects 4–11% of newborns and restricts tongue movement needed for effective feeding
- Key signs include painful latch, clicking sounds during feeding, poor weight gain, and frequent feeds that never satisfy
- Lip tie often co-occurs with tongue tie and causes a shallow latch with flanged upper lip
- Diagnosis requires a physical exam by a pediatrician or lactation consultant — not all ties need treatment
- Frenotomy is a quick, low-risk procedure that often improves feeding immediately
If breastfeeding is painful despite a seemingly good position, or your baby struggles to stay latched and gain weight, tongue tie could be the cause. This guide covers what to look for, when to seek help, and what treatment involves.
Related: Breastfeeding Tips and Baby Won't Take a Bottle.
What Is Tongue Tie (Ankyloglossia)?
Tongue tie occurs when the lingual frenulum — the thin strip of tissue connecting the underside of the tongue to the floor of the mouth — is unusually short, tight, or thick. This restricts the tongue's range of motion, making it harder for a baby to latch deeply, create suction, and transfer milk effectively.
Tongue tie is present from birth and ranges from mild (slight restriction) to severe (tongue tip fused to the floor of the mouth). Not all tongue ties cause feeding problems — many babies feed well despite a visible tie.
How common is it?
Studies estimate tongue tie affects 4–11% of newborns. It's roughly twice as common in boys and sometimes runs in families.
Signs During Breastfeeding
Tongue tie often reveals itself through feeding difficulties in the first days and weeks. Look for these signs:
Signs in the baby
- Difficulty latching or staying latched — frequently slips off the breast
- Clicking or smacking sounds while nursing
- Excessive drooling of milk from the corners of the mouth
- Prolonged feeds (over 40 minutes regularly) without satisfaction
- Poor weight gain or failure to regain birth weight by 2 weeks
- Fussiness and frustration at the breast
- Gassy or colicky symptoms from swallowing excess air
Signs in the mother
- Painful nursing — cracked, blistered, or misshapen nipples after feeds
- Incomplete breast drainage leading to engorgement or blocked ducts
- Recurrent mastitis
- Declining milk supply despite frequent feeding
| Sign | Tongue Tie Latch | Normal Latch |
|---|---|---|
| Tongue position | Stays low or bunches up, can't extend past gums | Extends over lower gum, cups the breast |
| Lip flange | Upper/lower lips tucked inward | Both lips flanged outward (fish lips) |
| Suction | Weak, compensates with jaw clamping | Strong, rhythmic suction with minimal jaw effort |
| Sound | Clicking, smacking, or loss of seal | Quiet swallowing with no clicking |
| Nipple shape after feed | Creased, lipstick-shaped, or blanched | Rounded and symmetrical |
Signs During Bottle Feeding
Tongue tie can affect bottle-fed babies too, though signs are often subtler:
- Milk dribbling from the sides of the mouth during feeds
- Very slow feeding — taking 30+ minutes per bottle consistently
- Excessive gas and spit-up from air swallowing
- Preference for faster-flow nipples to compensate for weak suction
- Chomping or biting motion rather than smooth sucking rhythm
Lip Tie: What's Different
A lip tie occurs when the labial frenulum — the tissue connecting the upper lip to the gum — is tight or thick, preventing the lip from flanging outward during feeding. Lip tie often accompanies tongue tie but can occur independently.
Key differences from tongue tie:
- Affects the upper lip rather than the tongue
- Causes a shallow latch because the lip can't seal around the breast or bottle
- The upper lip appears tucked in or "curled under" during feeds
- May cause a gap between the upper front teeth as they come in (cosmetic, usually self-correcting)
- Less studied than tongue tie — treatment recommendations vary more
Visual check
Gently lift your baby's upper lip. If the frenulum attaches close to the gum line or the tissue blanches white when you lift, it may be restrictive. But appearance alone doesn't confirm a problem — function matters most.
How It's Diagnosed
Tongue tie is diagnosed through a physical examination, not imaging. The provider will:
- Observe a feed (breast or bottle) to assess latch and milk transfer
- Lift the tongue to check frenulum length, thickness, and attachment point
- Assess tongue mobility — can it extend past the lower gum, lift to the palate, move side to side?
- Use a scoring tool like the Hazelbaker Assessment (HATLFF) or Bristol Tongue Assessment Tool (BTAT)
- Evaluate the baby's weight gain trend and feeding history
Who can diagnose it:
- Pediatricians and neonatologists
- International Board Certified Lactation Consultants (IBCLCs)
- Pediatric ENT specialists (otolaryngologists)
- Pediatric dentists
Important: Not all visible tongue ties need treatment. The decision should be based on functional impact — is the tie actually causing feeding problems?
Treatment Options (Frenotomy)
When tongue tie significantly impacts feeding, the most common treatment is a frenotomy (also called frenulotomy or tongue-tie division):
- What it is — a quick snip of the frenulum with sterile scissors or laser
- Duration — the cut itself takes 1–2 seconds (scissors) or slightly longer (laser)
- Anesthesia — often none for newborns under 3–4 months; topical numbing for older babies
- Bleeding — minimal (a few drops), controlled by immediate breastfeeding
- Setting — can be done in a clinic, no hospital stay required
For thicker posterior ties, a frenuloplasty (involving stitches) may be needed, typically under general anesthesia.
When to wait
If your baby is gaining weight well and feeding isn't painful, most providers recommend monitoring rather than immediate intervention. Some mild ties stretch over time as the baby grows.
What to Expect After the Procedure
Recovery from a frenotomy is typically quick:
- Baby can breastfeed immediately after — many parents notice improvement within the first feed
- A white or yellow patch forms under the tongue (healing wound, not infection) — resolves in 1–2 weeks
- Mild fussiness for 24–48 hours is normal
- Stretching exercises may be recommended to prevent reattachment (follow your provider's specific instructions)
- Full improvement in feeding may take days to weeks as baby learns new tongue movements
Follow-up with a lactation consultant within a few days is highly recommended to optimize latch with the baby's new range of motion.
FAQ
Can tongue tie resolve on its own?
Mild ties may stretch as the baby grows, and some children have no issues by the time they start solids. However, ties causing significant feeding problems in the newborn period rarely resolve without intervention.
Does tongue tie affect speech later?
Some untreated tongue ties can affect articulation of certain sounds (l, r, t, d, s, z) around age 3–4. Not all do — many children with mild ties develop speech normally.
Is frenotomy painful for the baby?
Babies typically cry briefly during the procedure but calm quickly when offered the breast or bottle. The frenulum has very few nerve endings in young infants. Most parents report the baby is settled within 1–2 minutes.
How do I know if the tie has reattached?
Signs include return of feeding difficulties, the wound edges joining back together, and reduced tongue mobility. This is more common if stretching exercises aren't performed. Contact your provider if you notice regression after initial improvement.
Can I get a second opinion before treatment?
Absolutely. Tongue tie assessment has a subjective component, and provider opinions can differ. If you're unsure, seeing an IBCLC alongside a pediatric ENT or dentist gives you both a feeding perspective and a structural one.
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Disclaimer: This article is for informational purposes only and does not replace professional medical advice. Always consult your pediatrician for concerns about your baby's health or development.
